Update liburcu version check

liburcu symbols have changed (_bp suffix added for the -bp flavor used
by UST), and we now depend on urcu 0.5.5 for struct rcu_head definition.
Therefore, check for synchronize_rcu_bp and call_rcu_bp.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

diff --git a/configure.ac b/configure.ac
index cbe239691fea17330fda29575fac30e8d6be9dfd..e32f11e628963efdf64d914c1cb7b9b5e80f7827 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -70,14 +70,10 @@ AC_CHECK_HEADERS([urcu-bp.h], [], [AC_MSG_ERROR([Cannot find [URCU] headers (urc
 This error can also occur when the liburcu package's configure script has not been run.])])
 
 # urcu - check that URCU lib is available to compilation
-AC_CHECK_LIB([urcu-bp], [synchronize_rcu], [], [AC_MSG_ERROR([Cannot find liburcu-bp lib. Use [LDFLAGS]=-Ldir to specify its location.])])
-
-# urcu - check that URCU lib is at least version 0.5.4
-AC_CHECK_LIB([urcu-bp], [rcu_bp_before_fork], [], [AC_MSG_ERROR([liburcu 0.5.4 or newer is needed, please update your version or use [LDFLAGS]=-Ldir to specify the right location.])])
-
-# urcu - check that URCU lib is at least version 0.5
-AC_CHECK_DECL([cds_list_add(0, 0)], [], [AC_MSG_ERROR([liburcu 0.5 or newer is needed, please update your version or use [LDFLAGS]=-Ldir to specify the right location.])], [[#include <urcu/list.h>]])
+AC_CHECK_LIB([urcu-bp], [synchronize_rcu_bp], [], [AC_MSG_ERROR([Cannot find liburcu-bp lib. Use [LDFLAGS]=-Ldir to specify its location.])])
 
+# urcu - check that URCU lib is at least version 0.5.5
+AC_CHECK_LIB([urcu-bp], [call_rcu_bp], [], [AC_MSG_ERROR([liburcu 0.5.5 or newer is needed, please update your version or use [LDFLAGS]=-Ldir to specify the right location.])])
 
 
 # Check for various supplementary host information (beyond the